/*
 * Copyright 2007 The authors
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.struts2.dom.struts.strutspackage;

import com.intellij.struts2.dom.FilterCurrentElementInVariantsResolvingConverter;
import com.intellij.util.xml.ConvertContext;
import org.jetbrains.annotations.Nullable;

/**
 * <code>package</code> "extends" attribute.
 *
 * @author Yann C&eacute;bron
 * @see com.intellij.struts2.dom.struts.strutspackage.StrutsPackage#getExtends()
 */
public abstract class StrutsPackageExtendsResolveConverter extends FilterCurrentElementInVariantsResolvingConverter<StrutsPackage> {

  public String getErrorMessage(@Nullable final String s, final ConvertContext convertContext) {
    return "Cannot resolve package ''" + s + "''";
  }

  @Nullable
  public String toString(@Nullable final StrutsPackage strutsPackage, final ConvertContext context) {
    return strutsPackage != null ? strutsPackage.getName().getStringValue() : null;
  }

}